The ROHL U.5399PN "F x "M Adaptor is from Perrin & Rowe Bath Collection. It is used as the connector from the hose to the outlet of the tub or shower mixers or an exposed thermostatic mixer. The ROHL U.5399PN Adaptor is recommended to reduce the shower arm to for outlets including U.5384, U.5388 or U.5354. This Adaptor and Connector by Rohl comes in three colors or finishes which are: polished chrome, polished nickel and satin nickel. Rohl offers a limited lifetime warranty for this product. Rohl is the most recognized luxury brand for faucets and fixtures. They have achieved success by staying committed to offering new and classically differentiated faucet and fixture products that are impeccably designed and deliver world class quality and value. Over the years, Rohl has been consistent in providing authentic luxury for your homes lavatory, bath and shower.